Home / 76,387.54-105,437.28-49,531.72

Finding the Fourth Proportional to 76,387.54, 105,437.28 and 49,531.72

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Solution

The fourth proportional to 76,387.54, 105,437.28 and 49,531.72 is: 68,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,387.54 : 105,437.28 = 49,531.72 : x
  2. Step 2: Convert to fraction form
    76,387.54/105,437.28 = 49,531.72/x
  3. Step 3: Cross multiply
    76,387.54x = 105,437.28 × 49,531.72
  4. Step 4: Simplify right side
    76,387.54x = 5,222,489,830.52
  5. Step 5: Solve for x
    x = 5,222,489,830.52/76,387.54
  6. Step 6: Final answer
    x = 68,368.35

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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.