Home / 72,787.07-100,445.95-40,955.97

Finding the Fourth Proportional to 72,787.07, 100,445.95 and 40,955.97

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Solution

The fourth proportional to 72,787.07, 100,445.95 and 40,955.97 is: 56,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,787.07 : 100,445.95 = 40,955.97 : x
  2. Step 2: Convert to fraction form
    72,787.07/100,445.95 = 40,955.97/x
  3. Step 3: Cross multiply
    72,787.07x = 100,445.95 × 40,955.97
  4. Step 4: Simplify right side
    72,787.07x = 4,113,861,314.82
  5. Step 5: Solve for x
    x = 4,113,861,314.82/72,787.07
  6. Step 6: Final answer
    x = 56,519.12

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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.