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Finding the Fourth Proportional to 55,510.71, 76,602.88 and 31,645.07

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Solution

The fourth proportional to 55,510.71, 76,602.88 and 31,645.07 is: 43,669.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,510.71 : 76,602.88 = 31,645.07 : x
  2. Step 2: Convert to fraction form
    55,510.71/76,602.88 = 31,645.07/x
  3. Step 3: Cross multiply
    55,510.71x = 76,602.88 × 31,645.07
  4. Step 4: Simplify right side
    55,510.71x = 2,424,103,341.58
  5. Step 5: Solve for x
    x = 2,424,103,341.58/55,510.71
  6. Step 6: Final answer
    x = 43,669.11

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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.