Home / 77,637.72-107,098.02-64,129.08

Finding the Fourth Proportional to 77,637.72, 107,098.02 and 64,129.08

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Solution

The fourth proportional to 77,637.72, 107,098.02 and 64,129.08 is: 88,463.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,637.72 : 107,098.02 = 64,129.08 : x
  2. Step 2: Convert to fraction form
    77,637.72/107,098.02 = 64,129.08/x
  3. Step 3: Cross multiply
    77,637.72x = 107,098.02 × 64,129.08
  4. Step 4: Simplify right side
    77,637.72x = 6,868,097,492.42
  5. Step 5: Solve for x
    x = 6,868,097,492.42/77,637.72
  6. Step 6: Final answer
    x = 88,463.41

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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.