Home / 78,880,860.68-118,859,710.32-64,818,931.82

Finding the Fourth Proportional to 78,880,860.68, 118,859,710.32 and 64,818,931.82

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Solution

The fourth proportional to 78,880,860.68, 118,859,710.32 and 64,818,931.82 is: 97,670,834.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,880,860.68 : 118,859,710.32 = 64,818,931.82 : x
  2. Step 2: Convert to fraction form
    78,880,860.68/118,859,710.32 = 64,818,931.82/x
  3. Step 3: Cross multiply
    78,880,860.68x = 118,859,710.32 × 64,818,931.82
  4. Step 4: Simplify right side
    78,880,860.68x = 7,704,359,458,782,731
  5. Step 5: Solve for x
    x = 7,704,359,458,782,731/78,880,860.68
  6. Step 6: Final answer
    x = 97,670,834.13

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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.