Home / 72,572.18-100,152.17-40,307.32

Finding the Fourth Proportional to 72,572.18, 100,152.17 and 40,307.32

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Solution

The fourth proportional to 72,572.18, 100,152.17 and 40,307.32 is: 55,625.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,572.18 : 100,152.17 = 40,307.32 : x
  2. Step 2: Convert to fraction form
    72,572.18/100,152.17 = 40,307.32/x
  3. Step 3: Cross multiply
    72,572.18x = 100,152.17 × 40,307.32
  4. Step 4: Simplify right side
    72,572.18x = 4,036,865,753.05
  5. Step 5: Solve for x
    x = 4,036,865,753.05/72,572.18
  6. Step 6: Final answer
    x = 55,625.53

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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.