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Finding the Fourth Proportional to 64,007.60, 89,702.80 and 64,007.60

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Solution

The fourth proportional to 64,007.60, 89,702.80 and 64,007.60 is: 89,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,007.60 : 89,702.80 = 64,007.60 : x
  2. Step 2: Convert to fraction form
    64,007.60/89,702.80 = 64,007.60/x
  3. Step 3: Cross multiply
    64,007.60x = 89,702.80 × 64,007.60
  4. Step 4: Simplify right side
    64,007.60x = 5,741,660,941.28
  5. Step 5: Solve for x
    x = 5,741,660,941.28/64,007.60
  6. Step 6: Final answer
    x = 89,702.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.