Home / 112,790.79-155,644.05-61,802.91

Finding the Fourth Proportional to 112,790.79, 155,644.05 and 61,802.91

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Solution

The fourth proportional to 112,790.79, 155,644.05 and 61,802.91 is: 85,284.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,790.79 : 155,644.05 = 61,802.91 : x
  2. Step 2: Convert to fraction form
    112,790.79/155,644.05 = 61,802.91/x
  3. Step 3: Cross multiply
    112,790.79x = 155,644.05 × 61,802.91
  4. Step 4: Simplify right side
    112,790.79x = 9,619,255,214.19
  5. Step 5: Solve for x
    x = 9,619,255,214.19/112,790.79
  6. Step 6: Final answer
    x = 85,284.05

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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.