Home / 56,688.51-85,021.38-53,878.35

Finding the Fourth Proportional to 56,688.51, 85,021.38 and 53,878.35

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Solution

The fourth proportional to 56,688.51, 85,021.38 and 53,878.35 is: 80,806.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,688.51 : 85,021.38 = 53,878.35 : x
  2. Step 2: Convert to fraction form
    56,688.51/85,021.38 = 53,878.35/x
  3. Step 3: Cross multiply
    56,688.51x = 85,021.38 × 53,878.35
  4. Step 4: Simplify right side
    56,688.51x = 4,580,811,669.12
  5. Step 5: Solve for x
    x = 4,580,811,669.12/56,688.51
  6. Step 6: Final answer
    x = 80,806.70

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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.