Home / 90,070.38-124,288.47-49,777.61

Finding the Fourth Proportional to 90,070.38, 124,288.47 and 49,777.61

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Solution

The fourth proportional to 90,070.38, 124,288.47 and 49,777.61 is: 68,688.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,070.38 : 124,288.47 = 49,777.61 : x
  2. Step 2: Convert to fraction form
    90,070.38/124,288.47 = 49,777.61/x
  3. Step 3: Cross multiply
    90,070.38x = 124,288.47 × 49,777.61
  4. Step 4: Simplify right side
    90,070.38x = 6,186,782,365.71
  5. Step 5: Solve for x
    x = 6,186,782,365.71/90,070.38
  6. Step 6: Final answer
    x = 68,688.31

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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.