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Finding the Fourth Proportional to 71,970.78, 107,406.48 and 64,097.58

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Solution

The fourth proportional to 71,970.78, 107,406.48 and 64,097.58 is: 95,656.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,970.78 : 107,406.48 = 64,097.58 : x
  2. Step 2: Convert to fraction form
    71,970.78/107,406.48 = 64,097.58/x
  3. Step 3: Cross multiply
    71,970.78x = 107,406.48 × 64,097.58
  4. Step 4: Simplify right side
    71,970.78x = 6,884,495,444.32
  5. Step 5: Solve for x
    x = 6,884,495,444.32/71,970.78
  6. Step 6: Final answer
    x = 95,656.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.