Home / 90,317.12-124,698.48-56,377.28

Finding the Fourth Proportional to 90,317.12, 124,698.48 and 56,377.28

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Solution

The fourth proportional to 90,317.12, 124,698.48 and 56,377.28 is: 77,838.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,317.12 : 124,698.48 = 56,377.28 : x
  2. Step 2: Convert to fraction form
    90,317.12/124,698.48 = 56,377.28/x
  3. Step 3: Cross multiply
    90,317.12x = 124,698.48 × 56,377.28
  4. Step 4: Simplify right side
    90,317.12x = 7,030,161,122.53
  5. Step 5: Solve for x
    x = 7,030,161,122.53/90,317.12
  6. Step 6: Final answer
    x = 77,838.63

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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.