Home / 112,621.04-155,417.01-61,633.80

Finding the Fourth Proportional to 112,621.04, 155,417.01 and 61,633.80

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Solution

The fourth proportional to 112,621.04, 155,417.01 and 61,633.80 is: 85,054.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,621.04 : 155,417.01 = 61,633.80 : x
  2. Step 2: Convert to fraction form
    112,621.04/155,417.01 = 61,633.80/x
  3. Step 3: Cross multiply
    112,621.04x = 155,417.01 × 61,633.80
  4. Step 4: Simplify right side
    112,621.04x = 9,578,940,679.81
  5. Step 5: Solve for x
    x = 9,578,940,679.81/112,621.04
  6. Step 6: Final answer
    x = 85,054.63

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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.