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Finding the Fourth Proportional to 46,801.80, 70,202.70 and 28,139.40

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Solution

The fourth proportional to 46,801.80, 70,202.70 and 28,139.40 is: 42,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,801.80 : 70,202.70 = 28,139.40 : x
  2. Step 2: Convert to fraction form
    46,801.80/70,202.70 = 28,139.40/x
  3. Step 3: Cross multiply
    46,801.80x = 70,202.70 × 28,139.40
  4. Step 4: Simplify right side
    46,801.80x = 1,975,461,856.38
  5. Step 5: Solve for x
    x = 1,975,461,856.38/46,801.80
  6. Step 6: Final answer
    x = 42,209.10

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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.