Home / 52,430.78-78,645.69-21,258.62

Finding the Fourth Proportional to 52,430.78, 78,645.69 and 21,258.62

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Solution

The fourth proportional to 52,430.78, 78,645.69 and 21,258.62 is: 31,887.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,430.78 : 78,645.69 = 21,258.62 : x
  2. Step 2: Convert to fraction form
    52,430.78/78,645.69 = 21,258.62/x
  3. Step 3: Cross multiply
    52,430.78x = 78,645.69 × 21,258.62
  4. Step 4: Simplify right side
    52,430.78x = 1,671,898,838.35
  5. Step 5: Solve for x
    x = 1,671,898,838.35/52,430.78
  6. Step 6: Final answer
    x = 31,887.74

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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.