Home / 78,488.17-117,732.10-64,580.92

Finding the Fourth Proportional to 78,488.17, 117,732.10 and 64,580.92

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Solution

The fourth proportional to 78,488.17, 117,732.10 and 64,580.92 is: 96,871.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,488.17 : 117,732.10 = 64,580.92 : x
  2. Step 2: Convert to fraction form
    78,488.17/117,732.10 = 64,580.92/x
  3. Step 3: Cross multiply
    78,488.17x = 117,732.10 × 64,580.92
  4. Step 4: Simplify right side
    78,488.17x = 7,603,247,331.53
  5. Step 5: Solve for x
    x = 7,603,247,331.53/78,488.17
  6. Step 6: Final answer
    x = 96,871.25

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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.