Home / 78,889,557.76-118,334,337.67-21,381,828.93

Finding the Fourth Proportional to 78,889,557.76, 118,334,337.67 and 21,381,828.93

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Solution

The fourth proportional to 78,889,557.76, 118,334,337.67 and 21,381,828.93 is: 32,072,743.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,557.76 : 118,334,337.67 = 21,381,828.93 : x
  2. Step 2: Convert to fraction form
    78,889,557.76/118,334,337.67 = 21,381,828.93/x
  3. Step 3: Cross multiply
    78,889,557.76x = 118,334,337.67 × 21,381,828.93
  4. Step 4: Simplify right side
    78,889,557.76x = 2,530,204,564,604,795
  5. Step 5: Solve for x
    x = 2,530,204,564,604,795/78,889,557.76
  6. Step 6: Final answer
    x = 32,072,743.67

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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.