Home / 71,438.19-98,564.79-56,283.90

Finding the Fourth Proportional to 71,438.19, 98,564.79 and 56,283.90

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Solution

The fourth proportional to 71,438.19, 98,564.79 and 56,283.90 is: 77,656.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,438.19 : 98,564.79 = 56,283.90 : x
  2. Step 2: Convert to fraction form
    71,438.19/98,564.79 = 56,283.90/x
  3. Step 3: Cross multiply
    71,438.19x = 98,564.79 × 56,283.90
  4. Step 4: Simplify right side
    71,438.19x = 5,547,610,783.88
  5. Step 5: Solve for x
    x = 5,547,610,783.88/71,438.19
  6. Step 6: Final answer
    x = 77,656.09

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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.