Home / 98,431.20-147,641.64-28,307.76

Finding the Fourth Proportional to 98,431.20, 147,641.64 and 28,307.76

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Solution

The fourth proportional to 98,431.20, 147,641.64 and 28,307.76 is: 42,460.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,431.20 : 147,641.64 = 28,307.76 : x
  2. Step 2: Convert to fraction form
    98,431.20/147,641.64 = 28,307.76/x
  3. Step 3: Cross multiply
    98,431.20x = 147,641.64 × 28,307.76
  4. Step 4: Simplify right side
    98,431.20x = 4,179,404,111.13
  5. Step 5: Solve for x
    x = 4,179,404,111.13/98,431.20
  6. Step 6: Final answer
    x = 42,460.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.