Home / 78,880,865.18-118,859,717.12-64,818,936.32

Finding the Fourth Proportional to 78,880,865.18, 118,859,717.12 and 64,818,936.32

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Solution

The fourth proportional to 78,880,865.18, 118,859,717.12 and 64,818,936.32 is: 97,670,840.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,880,865.18 : 118,859,717.12 = 64,818,936.32 : x
  2. Step 2: Convert to fraction form
    78,880,865.18/118,859,717.12 = 64,818,936.32/x
  3. Step 3: Cross multiply
    78,880,865.18x = 118,859,717.12 × 64,818,936.32
  4. Step 4: Simplify right side
    78,880,865.18x = 7,704,360,434,096,100
  5. Step 5: Solve for x
    x = 7,704,360,434,096,100/78,880,865.18
  6. Step 6: Final answer
    x = 97,670,840.92

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.