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Finding the Fourth Proportional to 93,307.50, 128,781.23 and 55,064.70

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Solution

The fourth proportional to 93,307.50, 128,781.23 and 55,064.70 is: 75,999.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,307.50 : 128,781.23 = 55,064.70 : x
  2. Step 2: Convert to fraction form
    93,307.50/128,781.23 = 55,064.70/x
  3. Step 3: Cross multiply
    93,307.50x = 128,781.23 × 55,064.70
  4. Step 4: Simplify right side
    93,307.50x = 7,091,299,520.26
  5. Step 5: Solve for x
    x = 7,091,299,520.26/93,307.50
  6. Step 6: Final answer
    x = 75,999.24

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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.