Home / 78,011.51-116,946.18-28,079.87

Finding the Fourth Proportional to 78,011.51, 116,946.18 and 28,079.87

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Solution

The fourth proportional to 78,011.51, 116,946.18 and 28,079.87 is: 42,094.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,011.51 : 116,946.18 = 28,079.87 : x
  2. Step 2: Convert to fraction form
    78,011.51/116,946.18 = 28,079.87/x
  3. Step 3: Cross multiply
    78,011.51x = 116,946.18 × 28,079.87
  4. Step 4: Simplify right side
    78,011.51x = 3,283,832,946.67
  5. Step 5: Solve for x
    x = 3,283,832,946.67/78,011.51
  6. Step 6: Final answer
    x = 42,094.21

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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.