Home / 61,977.79-85,431.20-56,829.23

Finding the Fourth Proportional to 61,977.79, 85,431.20 and 56,829.23

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Solution

The fourth proportional to 61,977.79, 85,431.20 and 56,829.23 is: 78,334.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,977.79 : 85,431.20 = 56,829.23 : x
  2. Step 2: Convert to fraction form
    61,977.79/85,431.20 = 56,829.23/x
  3. Step 3: Cross multiply
    61,977.79x = 85,431.20 × 56,829.23
  4. Step 4: Simplify right side
    61,977.79x = 4,854,989,313.98
  5. Step 5: Solve for x
    x = 4,854,989,313.98/61,977.79
  6. Step 6: Final answer
    x = 78,334.34

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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.