Home / 78,079.18-107,737.68-47,436.34

Finding the Fourth Proportional to 78,079.18, 107,737.68 and 47,436.34

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Solution

The fourth proportional to 78,079.18, 107,737.68 and 47,436.34 is: 65,455.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,079.18 : 107,737.68 = 47,436.34 : x
  2. Step 2: Convert to fraction form
    78,079.18/107,737.68 = 47,436.34/x
  3. Step 3: Cross multiply
    78,079.18x = 107,737.68 × 47,436.34
  4. Step 4: Simplify right side
    78,079.18x = 5,110,681,219.29
  5. Step 5: Solve for x
    x = 5,110,681,219.29/78,079.18
  6. Step 6: Final answer
    x = 65,455.11

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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.