Home / 85,887,335.70-128,831,003.55-51,875,111.70

Finding the Fourth Proportional to 85,887,335.70, 128,831,003.55 and 51,875,111.70

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Solution

The fourth proportional to 85,887,335.70, 128,831,003.55 and 51,875,111.70 is: 77,812,667.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,887,335.70 : 128,831,003.55 = 51,875,111.70 : x
  2. Step 2: Convert to fraction form
    85,887,335.70/128,831,003.55 = 51,875,111.70/x
  3. Step 3: Cross multiply
    85,887,335.70x = 128,831,003.55 × 51,875,111.70
  4. Step 4: Simplify right side
    85,887,335.70x = 6,683,122,699,579,347
  5. Step 5: Solve for x
    x = 6,683,122,699,579,347/85,887,335.70
  6. Step 6: Final answer
    x = 77,812,667.55

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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.