Home / 90,875.62-125,420.13-52,128.55

Finding the Fourth Proportional to 90,875.62, 125,420.13 and 52,128.55

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Solution

The fourth proportional to 90,875.62, 125,420.13 and 52,128.55 is: 71,944.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,875.62 : 125,420.13 = 52,128.55 : x
  2. Step 2: Convert to fraction form
    90,875.62/125,420.13 = 52,128.55/x
  3. Step 3: Cross multiply
    90,875.62x = 125,420.13 × 52,128.55
  4. Step 4: Simplify right side
    90,875.62x = 6,537,969,204.16
  5. Step 5: Solve for x
    x = 6,537,969,204.16/90,875.62
  6. Step 6: Final answer
    x = 71,944.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.