Home / 71,139.08-98,165.58-40,916.36

Finding the Fourth Proportional to 71,139.08, 98,165.58 and 40,916.36

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Solution

The fourth proportional to 71,139.08, 98,165.58 and 40,916.36 is: 56,460.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,139.08 : 98,165.58 = 40,916.36 : x
  2. Step 2: Convert to fraction form
    71,139.08/98,165.58 = 40,916.36/x
  3. Step 3: Cross multiply
    71,139.08x = 98,165.58 × 40,916.36
  4. Step 4: Simplify right side
    71,139.08x = 4,016,578,210.89
  5. Step 5: Solve for x
    x = 4,016,578,210.89/71,139.08
  6. Step 6: Final answer
    x = 56,460.92

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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.