Home / 52,459.86-78,698.51-20,870.24

Finding the Fourth Proportional to 52,459.86, 78,698.51 and 20,870.24

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Solution

The fourth proportional to 52,459.86, 78,698.51 and 20,870.24 is: 31,308.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,459.86 : 78,698.51 = 20,870.24 : x
  2. Step 2: Convert to fraction form
    52,459.86/78,698.51 = 20,870.24/x
  3. Step 3: Cross multiply
    52,459.86x = 78,698.51 × 20,870.24
  4. Step 4: Simplify right side
    52,459.86x = 1,642,456,371.76
  5. Step 5: Solve for x
    x = 1,642,456,371.76/52,459.86
  6. Step 6: Final answer
    x = 31,308.82

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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.