Home / 71,688.32-98,925.24-39,856.40

Finding the Fourth Proportional to 71,688.32, 98,925.24 and 39,856.40

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Solution

The fourth proportional to 71,688.32, 98,925.24 and 39,856.40 is: 54,999.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,688.32 : 98,925.24 = 39,856.40 : x
  2. Step 2: Convert to fraction form
    71,688.32/98,925.24 = 39,856.40/x
  3. Step 3: Cross multiply
    71,688.32x = 98,925.24 × 39,856.40
  4. Step 4: Simplify right side
    71,688.32x = 3,942,803,935.54
  5. Step 5: Solve for x
    x = 3,942,803,935.54/71,688.32
  6. Step 6: Final answer
    x = 54,999.25

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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.