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Finding the Fourth Proportional to 93,702.80, 129,308.69 and 53,415.21

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Solution

The fourth proportional to 93,702.80, 129,308.69 and 53,415.21 is: 73,712.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,702.80 : 129,308.69 = 53,415.21 : x
  2. Step 2: Convert to fraction form
    93,702.80/129,308.69 = 53,415.21/x
  3. Step 3: Cross multiply
    93,702.80x = 129,308.69 × 53,415.21
  4. Step 4: Simplify right side
    93,702.80x = 6,907,050,564.10
  5. Step 5: Solve for x
    x = 6,907,050,564.10/93,702.80
  6. Step 6: Final answer
    x = 73,712.32

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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.