Home / 98,931.04-136,528.32-56,488.80

Finding the Fourth Proportional to 98,931.04, 136,528.32 and 56,488.80

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Solution

The fourth proportional to 98,931.04, 136,528.32 and 56,488.80 is: 77,956.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,931.04 : 136,528.32 = 56,488.80 : x
  2. Step 2: Convert to fraction form
    98,931.04/136,528.32 = 56,488.80/x
  3. Step 3: Cross multiply
    98,931.04x = 136,528.32 × 56,488.80
  4. Step 4: Simplify right side
    98,931.04x = 7,712,320,962.82
  5. Step 5: Solve for x
    x = 7,712,320,962.82/98,931.04
  6. Step 6: Final answer
    x = 77,956.53

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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.