Home / 85,963,143.40-128,944,715.10-42,916,422.40

Finding the Fourth Proportional to 85,963,143.40, 128,944,715.10 and 42,916,422.40

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Solution

The fourth proportional to 85,963,143.40, 128,944,715.10 and 42,916,422.40 is: 64,374,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,963,143.40 : 128,944,715.10 = 42,916,422.40 : x
  2. Step 2: Convert to fraction form
    85,963,143.40/128,944,715.10 = 42,916,422.40/x
  3. Step 3: Cross multiply
    85,963,143.40x = 128,944,715.10 × 42,916,422.40
  4. Step 4: Simplify right side
    85,963,143.40x = 5,533,845,859,479,258
  5. Step 5: Solve for x
    x = 5,533,845,859,479,258/85,963,143.40
  6. Step 6: Final answer
    x = 64,374,633.60

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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.