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Finding the Fourth Proportional to 60,484.34, 90,741.40 and 21,041.80

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Solution

The fourth proportional to 60,484.34, 90,741.40 and 21,041.80 is: 31,567.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,484.34 : 90,741.40 = 21,041.80 : x
  2. Step 2: Convert to fraction form
    60,484.34/90,741.40 = 21,041.80/x
  3. Step 3: Cross multiply
    60,484.34x = 90,741.40 × 21,041.80
  4. Step 4: Simplify right side
    60,484.34x = 1,909,362,111.06
  5. Step 5: Solve for x
    x = 1,909,362,111.06/60,484.34
  6. Step 6: Final answer
    x = 31,567.87

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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.