Home / 56,688.60-85,065.30-21,653.40

Finding the Fourth Proportional to 56,688.60, 85,065.30 and 21,653.40

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Solution

The fourth proportional to 56,688.60, 85,065.30 and 21,653.40 is: 32,492.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,688.60 : 85,065.30 = 21,653.40 : x
  2. Step 2: Convert to fraction form
    56,688.60/85,065.30 = 21,653.40/x
  3. Step 3: Cross multiply
    56,688.60x = 85,065.30 × 21,653.40
  4. Step 4: Simplify right side
    56,688.60x = 1,841,952,967.02
  5. Step 5: Solve for x
    x = 1,841,952,967.02/56,688.60
  6. Step 6: Final answer
    x = 32,492.48

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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.