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Finding the Fourth Proportional to 71,293.41, 98,378.28 and 42,607.40

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Solution

The fourth proportional to 71,293.41, 98,378.28 and 42,607.40 is: 58,794.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,293.41 : 98,378.28 = 42,607.40 : x
  2. Step 2: Convert to fraction form
    71,293.41/98,378.28 = 42,607.40/x
  3. Step 3: Cross multiply
    71,293.41x = 98,378.28 × 42,607.40
  4. Step 4: Simplify right side
    71,293.41x = 4,191,642,235.38
  5. Step 5: Solve for x
    x = 4,191,642,235.38/71,293.41
  6. Step 6: Final answer
    x = 58,794.25

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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.