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Finding the Fourth Proportional to 45,641.34, 62,986.14 and 28,643.76

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Solution

The fourth proportional to 45,641.34, 62,986.14 and 28,643.76 is: 39,529.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,641.34 : 62,986.14 = 28,643.76 : x
  2. Step 2: Convert to fraction form
    45,641.34/62,986.14 = 28,643.76/x
  3. Step 3: Cross multiply
    45,641.34x = 62,986.14 × 28,643.76
  4. Step 4: Simplify right side
    45,641.34x = 1,804,159,877.49
  5. Step 5: Solve for x
    x = 1,804,159,877.49/45,641.34
  6. Step 6: Final answer
    x = 39,529.07

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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.