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Finding the Fourth Proportional to 86,070, 118,776.65 and 48,344.25

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Solution

The fourth proportional to 86,070, 118,776.65 and 48,344.25 is: 66,715.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,070 : 118,776.65 = 48,344.25 : x
  2. Step 2: Convert to fraction form
    86,070/118,776.65 = 48,344.25/x
  3. Step 3: Cross multiply
    86,070x = 118,776.65 × 48,344.25
  4. Step 4: Simplify right side
    86,070x = 5,742,167,820.04
  5. Step 5: Solve for x
    x = 5,742,167,820.04/86,070
  6. Step 6: Final answer
    x = 66,715.09

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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.