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Finding the Fourth Proportional to 56,762.88, 78,320.79 and 32,888.10

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Solution

The fourth proportional to 56,762.88, 78,320.79 and 32,888.10 is: 45,378.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,762.88 : 78,320.79 = 32,888.10 : x
  2. Step 2: Convert to fraction form
    56,762.88/78,320.79 = 32,888.10/x
  3. Step 3: Cross multiply
    56,762.88x = 78,320.79 × 32,888.10
  4. Step 4: Simplify right side
    56,762.88x = 2,575,821,973.60
  5. Step 5: Solve for x
    x = 2,575,821,973.60/56,762.88
  6. Step 6: Final answer
    x = 45,378.63

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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.