Home / 84,443.40-126,628.65-42,307.20

Finding the Fourth Proportional to 84,443.40, 126,628.65 and 42,307.20

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Solution

The fourth proportional to 84,443.40, 126,628.65 and 42,307.20 is: 63,442.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,443.40 : 126,628.65 = 42,307.20 : x
  2. Step 2: Convert to fraction form
    84,443.40/126,628.65 = 42,307.20/x
  3. Step 3: Cross multiply
    84,443.40x = 126,628.65 × 42,307.20
  4. Step 4: Simplify right side
    84,443.40x = 5,357,303,621.28
  5. Step 5: Solve for x
    x = 5,357,303,621.28/84,443.40
  6. Step 6: Final answer
    x = 63,442.54

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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.