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Finding the Fourth Proportional to 87,264.55, 130,775.70 and 39,763.55

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Solution

The fourth proportional to 87,264.55, 130,775.70 and 39,763.55 is: 59,590.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,264.55 : 130,775.70 = 39,763.55 : x
  2. Step 2: Convert to fraction form
    87,264.55/130,775.70 = 39,763.55/x
  3. Step 3: Cross multiply
    87,264.55x = 130,775.70 × 39,763.55
  4. Step 4: Simplify right side
    87,264.55x = 5,200,106,085.74
  5. Step 5: Solve for x
    x = 5,200,106,085.74/87,264.55
  6. Step 6: Final answer
    x = 59,590.13

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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.