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Finding the Fourth Proportional to 64,959.80, 97,439.70 and 51,837.80

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Solution

The fourth proportional to 64,959.80, 97,439.70 and 51,837.80 is: 77,756.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,959.80 : 97,439.70 = 51,837.80 : x
  2. Step 2: Convert to fraction form
    64,959.80/97,439.70 = 51,837.80/x
  3. Step 3: Cross multiply
    64,959.80x = 97,439.70 × 51,837.80
  4. Step 4: Simplify right side
    64,959.80x = 5,051,059,680.66
  5. Step 5: Solve for x
    x = 5,051,059,680.66/64,959.80
  6. Step 6: Final answer
    x = 77,756.70

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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.