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Finding the Fourth Proportional to 52,510.70, 78,777.80 and 19,230.10

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Solution

The fourth proportional to 52,510.70, 78,777.80 and 19,230.10 is: 28,849.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,510.70 : 78,777.80 = 19,230.10 : x
  2. Step 2: Convert to fraction form
    52,510.70/78,777.80 = 19,230.10/x
  3. Step 3: Cross multiply
    52,510.70x = 78,777.80 × 19,230.10
  4. Step 4: Simplify right side
    52,510.70x = 1,514,904,971.78
  5. Step 5: Solve for x
    x = 1,514,904,971.78/52,510.70
  6. Step 6: Final answer
    x = 28,849.45

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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.