Home / 90,149.76-124,403.04-52,421.28

Finding the Fourth Proportional to 90,149.76, 124,403.04 and 52,421.28

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Solution

The fourth proportional to 90,149.76, 124,403.04 and 52,421.28 is: 72,339.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,149.76 : 124,403.04 = 52,421.28 : x
  2. Step 2: Convert to fraction form
    90,149.76/124,403.04 = 52,421.28/x
  3. Step 3: Cross multiply
    90,149.76x = 124,403.04 × 52,421.28
  4. Step 4: Simplify right side
    90,149.76x = 6,521,366,592.69
  5. Step 5: Solve for x
    x = 6,521,366,592.69/90,149.76
  6. Step 6: Final answer
    x = 72,339.26

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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.