Home / 90,000.90-135,001.35-58,508.10

Finding the Fourth Proportional to 90,000.90, 135,001.35 and 58,508.10

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Solution

The fourth proportional to 90,000.90, 135,001.35 and 58,508.10 is: 87,762.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,000.90 : 135,001.35 = 58,508.10 : x
  2. Step 2: Convert to fraction form
    90,000.90/135,001.35 = 58,508.10/x
  3. Step 3: Cross multiply
    90,000.90x = 135,001.35 × 58,508.10
  4. Step 4: Simplify right side
    90,000.90x = 7,898,672,485.94
  5. Step 5: Solve for x
    x = 7,898,672,485.94/90,000.90
  6. Step 6: Final answer
    x = 87,762.15

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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.