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Finding the Fourth Proportional to 51,567.93, 77,357.30 and 21,988.89

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Solution

The fourth proportional to 51,567.93, 77,357.30 and 21,988.89 is: 32,985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,567.93 : 77,357.30 = 21,988.89 : x
  2. Step 2: Convert to fraction form
    51,567.93/77,357.30 = 21,988.89/x
  3. Step 3: Cross multiply
    51,567.93x = 77,357.30 × 21,988.89
  4. Step 4: Simplify right side
    51,567.93x = 1,701,001,050.45
  5. Step 5: Solve for x
    x = 1,701,001,050.45/51,567.93
  6. Step 6: Final answer
    x = 32,985.64

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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.