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Finding the Fourth Proportional to 71,038.40, 98,019.86 and 45,549.32

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Solution

The fourth proportional to 71,038.40, 98,019.86 and 45,549.32 is: 62,849.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,038.40 : 98,019.86 = 45,549.32 : x
  2. Step 2: Convert to fraction form
    71,038.40/98,019.86 = 45,549.32/x
  3. Step 3: Cross multiply
    71,038.40x = 98,019.86 × 45,549.32
  4. Step 4: Simplify right side
    71,038.40x = 4,464,737,969.50
  5. Step 5: Solve for x
    x = 4,464,737,969.50/71,038.40
  6. Step 6: Final answer
    x = 62,849.64

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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.