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Finding the Fourth Proportional to 66,468.60, 99,702.90 and 45,473.40

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Solution

The fourth proportional to 66,468.60, 99,702.90 and 45,473.40 is: 68,210.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,468.60 : 99,702.90 = 45,473.40 : x
  2. Step 2: Convert to fraction form
    66,468.60/99,702.90 = 45,473.40/x
  3. Step 3: Cross multiply
    66,468.60x = 99,702.90 × 45,473.40
  4. Step 4: Simplify right side
    66,468.60x = 4,533,829,852.86
  5. Step 5: Solve for x
    x = 4,533,829,852.86/66,468.60
  6. Step 6: Final answer
    x = 68,210.10

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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.