Home / 30,521,000.80-45,781,501.20-28,182,660.40

Finding the Fourth Proportional to 30,521,000.80, 45,781,501.20 and 28,182,660.40

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Solution

The fourth proportional to 30,521,000.80, 45,781,501.20 and 28,182,660.40 is: 42,273,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,521,000.80 : 45,781,501.20 = 28,182,660.40 : x
  2. Step 2: Convert to fraction form
    30,521,000.80/45,781,501.20 = 28,182,660.40/x
  3. Step 3: Cross multiply
    30,521,000.80x = 45,781,501.20 × 28,182,660.40
  4. Step 4: Simplify right side
    30,521,000.80x = 1,290,244,500,921,792.50
  5. Step 5: Solve for x
    x = 1,290,244,500,921,792.50/30,521,000.80
  6. Step 6: Final answer
    x = 42,273,990.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.