Home / 51,816.20-77,666.70-28,459.40

Finding the Fourth Proportional to 51,816.20, 77,666.70 and 28,459.40

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Solution

The fourth proportional to 51,816.20, 77,666.70 and 28,459.40 is: 42,657.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,816.20 : 77,666.70 = 28,459.40 : x
  2. Step 2: Convert to fraction form
    51,816.20/77,666.70 = 28,459.40/x
  3. Step 3: Cross multiply
    51,816.20x = 77,666.70 × 28,459.40
  4. Step 4: Simplify right side
    51,816.20x = 2,210,347,681.98
  5. Step 5: Solve for x
    x = 2,210,347,681.98/51,816.20
  6. Step 6: Final answer
    x = 42,657.46

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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.