Home / 78,095.64-107,772.05-42,285.67

Finding the Fourth Proportional to 78,095.64, 107,772.05 and 42,285.67

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Solution

The fourth proportional to 78,095.64, 107,772.05 and 42,285.67 is: 58,354.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,095.64 : 107,772.05 = 42,285.67 : x
  2. Step 2: Convert to fraction form
    78,095.64/107,772.05 = 42,285.67/x
  3. Step 3: Cross multiply
    78,095.64x = 107,772.05 × 42,285.67
  4. Step 4: Simplify right side
    78,095.64x = 4,557,213,341.52
  5. Step 5: Solve for x
    x = 4,557,213,341.52/78,095.64
  6. Step 6: Final answer
    x = 58,354.26

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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.