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Finding the Fourth Proportional to 58,709.84, 88,010.72 and 21,261.20

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Solution

The fourth proportional to 58,709.84, 88,010.72 and 21,261.20 is: 31,872.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,709.84 : 88,010.72 = 21,261.20 : x
  2. Step 2: Convert to fraction form
    58,709.84/88,010.72 = 21,261.20/x
  3. Step 3: Cross multiply
    58,709.84x = 88,010.72 × 21,261.20
  4. Step 4: Simplify right side
    58,709.84x = 1,871,213,520.06
  5. Step 5: Solve for x
    x = 1,871,213,520.06/58,709.84
  6. Step 6: Final answer
    x = 31,872.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.