Home / 86,913.16-119,941.86-56,717.80

Finding the Fourth Proportional to 86,913.16, 119,941.86 and 56,717.80

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Solution

The fourth proportional to 86,913.16, 119,941.86 and 56,717.80 is: 78,271.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,913.16 : 119,941.86 = 56,717.80 : x
  2. Step 2: Convert to fraction form
    86,913.16/119,941.86 = 56,717.80/x
  3. Step 3: Cross multiply
    86,913.16x = 119,941.86 × 56,717.80
  4. Step 4: Simplify right side
    86,913.16x = 6,802,838,427.11
  5. Step 5: Solve for x
    x = 6,802,838,427.11/86,913.16
  6. Step 6: Final answer
    x = 78,271.67

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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.