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Finding the Fourth Proportional to 61,012.40, 84,357.76 and 53,437

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Solution

The fourth proportional to 61,012.40, 84,357.76 and 53,437 is: 73,883.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,012.40 : 84,357.76 = 53,437 : x
  2. Step 2: Convert to fraction form
    61,012.40/84,357.76 = 53,437/x
  3. Step 3: Cross multiply
    61,012.40x = 84,357.76 × 53,437
  4. Step 4: Simplify right side
    61,012.40x = 4,507,825,621.12
  5. Step 5: Solve for x
    x = 4,507,825,621.12/61,012.40
  6. Step 6: Final answer
    x = 73,883.76

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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.