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Finding the Fourth Proportional to 98,646.72, 147,963.60 and 42,484.56

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Solution

The fourth proportional to 98,646.72, 147,963.60 and 42,484.56 is: 63,724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,646.72 : 147,963.60 = 42,484.56 : x
  2. Step 2: Convert to fraction form
    98,646.72/147,963.60 = 42,484.56/x
  3. Step 3: Cross multiply
    98,646.72x = 147,963.60 × 42,484.56
  4. Step 4: Simplify right side
    98,646.72x = 6,286,168,442.02
  5. Step 5: Solve for x
    x = 6,286,168,442.02/98,646.72
  6. Step 6: Final answer
    x = 63,724.05

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1.5x scale

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.