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Finding the Fourth Proportional to 56,342.22, 77,749.30 and 30,843.69

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Solution

The fourth proportional to 56,342.22, 77,749.30 and 30,843.69 is: 42,562.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,342.22 : 77,749.30 = 30,843.69 : x
  2. Step 2: Convert to fraction form
    56,342.22/77,749.30 = 30,843.69/x
  3. Step 3: Cross multiply
    56,342.22x = 77,749.30 × 30,843.69
  4. Step 4: Simplify right side
    56,342.22x = 2,398,075,482.81
  5. Step 5: Solve for x
    x = 2,398,075,482.81/56,342.22
  6. Step 6: Final answer
    x = 42,562.68

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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.