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Finding the Fourth Proportional to 98,760.76, 136,289.58 and 53,439.51

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Solution

The fourth proportional to 98,760.76, 136,289.58 and 53,439.51 is: 73,746.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,760.76 : 136,289.58 = 53,439.51 : x
  2. Step 2: Convert to fraction form
    98,760.76/136,289.58 = 53,439.51/x
  3. Step 3: Cross multiply
    98,760.76x = 136,289.58 × 53,439.51
  4. Step 4: Simplify right side
    98,760.76x = 7,283,248,869.37
  5. Step 5: Solve for x
    x = 7,283,248,869.37/98,760.76
  6. Step 6: Final answer
    x = 73,746.38

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1.5x scale

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.