Home / 98,869.28-136,452.60-56,436.08

Finding the Fourth Proportional to 98,869.28, 136,452.60 and 56,436.08

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Solution

The fourth proportional to 98,869.28, 136,452.60 and 56,436.08 is: 77,889.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,869.28 : 136,452.60 = 56,436.08 : x
  2. Step 2: Convert to fraction form
    98,869.28/136,452.60 = 56,436.08/x
  3. Step 3: Cross multiply
    98,869.28x = 136,452.60 × 56,436.08
  4. Step 4: Simplify right side
    98,869.28x = 7,700,849,849.81
  5. Step 5: Solve for x
    x = 7,700,849,849.81/98,869.28
  6. Step 6: Final answer
    x = 77,889.21

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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.